Problem with responsive menu

I have a problem: the main menu is ok in the homepage ( www.brignolocaruso.it/ ), but in all other pages is not responsive anymore. How can I fix it?

Menu needs jqury to work. On home page you get it from carousel and on other pages you don't have carousel. So return templates default jquery reference in head of index.php of template and turn it off in all modules so you have it on all pages once (and not more that once) before any component that uses it.

I am having the same problem here: www.rivercityrange.net/

but I do not understand what to do. How do I return the jquery reference??

Your site already loads jQuery so you don't need to do anything about that. Also, when I resize browser when looking your site, I see the top menu converts to a button normally.

Regards

Thanx!
Do I have to add manually some code in the index.php file? Or it's just something to switch on in the backend?

You have it there so no need to edit index.php. Just turn it off in all other extensions